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                [Usaco2012 Mar]Haybale Restacking                 </h1>
                <p>时间限制：5s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：128MB</p>			</div>
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                                <h3>题目描述</h3><p><p><span style="font-size: medium"><span class="Apple-style-span" style="word-spacing: 0px; font: medium Arial,Microsoft Yahei,Simsun,sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; border-collapse: separate; orphans: 2; widows: 2; webkit-border-horizontal-spacing: 0px; webkit-border-vertical-spacing: 0px; webkit-text-decorations-in-effect: none; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"><span class="Apple-style-span" style="font-family: monospace">Farmer John has just ordered a large number of bales of hay. He would like to organize these into N piles (1 &lt;= N &lt;= 100,000) arranged in a circle, where pile i contains B_i bales of hay. Unfortunately, the truck driver delivering the hay was not listening carefully when Farmer John provided this information, and only remembered to leave the hay in N piles arranged in a circle. After delivery, Farmer John notes that pile i contains A_i bales of hay. Of course, the A_i's and the B_i's have the same sum. Farmer John would like to move the bales of hay from their current configuration (described by the A_i's) into his desired target configuration (described by the B_i's). It takes him x units of work to move one hay bale from one pile to a pile that is x steps away around the circle. Please help him compute the minimum amount of work he will need to spend.&nbsp;</span></span></span></p>
<p><span style="font-size: medium"><span class="Apple-style-span" style="word-spacing: 0px; font: medium Arial,Microsoft Yahei,Simsun,sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; border-collapse: separate; orphans: 2; widows: 2; webkit-border-horizontal-spacing: 0px; webkit-border-vertical-spacing: 0px; webkit-text-decorations-in-effect: none; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"><span class="Apple-style-span" style="font-family: monospace"><span class="Apple-style-span" style="word-spacing: 0px; font: medium Arial,Microsoft Yahei,Simsun,sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; border-collapse: separate; orphans: 2; widows: 2; webkit-border-horizontal-spacing: 0px; webkit-border-vertical-spacing: 0px; webkit-text-decorations-in-effect: none; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"><span class="Apple-style-span" style="color: rgb(70,70,70); line-height: 21px; font-family: simsun; text-align: left">给出n块土地，现有泥土A[i]，需要改造成B[i]，但这次土地排列成环，且不可买进买出，只能运，且&sum;A[i]=&sum;B[i]，问最小花费。</span></span></span></span></span></p></p><hr/><h3>输入格式</h3><p><p><font face="Courier New" size="4">&nbsp;INPUT FORMAT: * Line 1: The single integer N. * Lines 2..1+N: Line i+1 contains the two integers A_i and B_i (1 &lt;= A_i, B_i &lt;= 1000).&nbsp;</font></p></p><hr/><h3>输出格式</h3><p></p><hr/><h3>样例输入</h3><pre> 4 7 1 3 4 9 2 1 13
 INPUT DETAILS: There are 4 piles around a circle. Initially, the piles contain 7, 3, 9, and 1 bales of hay. Farmer John would like to move them so the piles contain 1, 4, 2, and 13 bales of hay.</pre><hr/><h3>样例输出</h3><pre>13
 OUTPUT DETAILS: A minimum of 13 units of work is required (move 6 bales from pile 1 to pile 4, move 1 bale from pile 3 to pile 2, and move 6 bales from pile 3 to pile 4).</pre><hr/><h3>提示</h3><p>没有写明提示</p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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